Their mother, Pat Casey-Spencer, 56, was listed as the administrator of a private Facebook group called 'Praying for a Kidney.'

The family is also angry that Spencer is being heavily criticized for failing to quarantine himself on his return from West Africa.

The 33-year-old doctor tested positive for Ebola on Thursday and is currently undergoing treatment at Bellevue Hospital.

He has been slammed in the media for roaming the city despite feeling sluggish around a week after his return to the US from Guinea where he treated Ebola patients.

Many of Spencer’s family members have come to his defense.

“As far as I'm concerned he did nothing wrong,” Arnie Spencer said of his nephew, who was in West Africa working with French aid group Medecins Sans Frontieres. “I’m angry that he is getting trashed.”

“He's a hero to me,” his uncle told the Mail Online, from his home in Royal Oak, Michigan. “He's a fantastic humanitarian and that is how people should think of him. He wanted to be a doctor without borders from when he was a kid. It's all he wanted to do.”

“He didn't just want to be a doctor, he wanted to be a doctor without borders.”

“I don't know about other members of the family, but I was against him going. But I'm still very proud of him.”

“He's getting the best care possible in New York. It's not like he is still in Africa.

“I have no doubt he will pull through,” he added.

Arnie Spencer said that he hasn't talked with his nephew recently but is looking forward to next year when Craig and his fiancee Morgan Dixon plan to marry.

Dixon, 30, lived with Dr Spencer and is one of three people now in quarantine because of contact with him. Two of Spencer’s friends have also been quarantined as a precaution.

Dr Spencer is the ninth person to be treated for Ebola in U.S. hospitals since August.